A) \[pE\sin \theta ,\,-pE\cos \theta \]
B) \[pE\sin \theta ,-2\,pE\cos \theta \]
C) \[pE\sin \theta ,-2pE\cos \theta \]
D) \[pE\cos \theta ,-pE\sin \theta \]
Correct Answer: A
Solution :
Here, Torque \[\tau =pE\sin \theta \] Potential energy of the dipole\[U=-\int_{{}}^{{}}{\tau \,d\theta }\] \[=-\int_{\pi /2}^{0}{pE\sin \theta d\theta =pE[\cos \theta -0]}\]\[=-pE\cos \theta \]You need to login to perform this action.
You will be redirected in
3 sec